Wrench



F. M. MURRAY. WRENCH.

APPLICATION FILED MAYIS, 1920.

1,383,744. Patented y 5, 1921.

[ fi/Varmy To all whom it may concern FRANK M. MURRAY,OF'CADYVILLE-,-@1\TEVI YORK."

wanton.

Be it known that I, FRANK M. MUBRAY, a citizen of the UnitedStates,residing'at Cadyville, in the county of Clinton and State, of New Yorkhzwe inventedcertain new and useful Improvements in renches, of whichthe following is a specification,

' reference being had to the accompanying drawings. Y j I This inventionrelates to certain improvements in wrenches and is primarily an im-'provement on form of wrench embodiedin my pending applicatiomfierial No.2%,555'

filed September 18, 191.8, and allowe'd'Noember-11,1919". a

It is an object of the present invention to provide a device ofthisgeneral characterembodying a slidable; andfa slid'able' holding membercoacting' therewith together with inovel and improvedfmeans whereby saidjaw and member are connected- Another object of the invention is toprovide a novel and improved wrenchwherein is embodied a slida'bl'e jawand a slidable holding member coacting therewith together with meansoperating automatically to maintain the holding member substantiallyfixed in a' desired adjustment along; the shank. v

The inve tion consists in the details of construction and in thecombination and arrangement ofgthe several parts of improve'd'wren'chwhereby certain important advantages areattained and the device re'n-"dered simpler, less eiipensive zn'iol 'otherwise more convenient andadvantageous for use, as wil'l the=heneinafter1 more fully set forth. 7

The novel features of my invention-will hereinafter be definitelyclaimed; V

Inorder that my invention may be the better understood, I will nowproceed to describe the same with reference to the accompanyingdrawings, wherein:

Figure 1 is a View in side elevation of a wrench constructed inaccordance with an embodiment of my invention.

Fig. 2 is a fragmentary view, partly in section and partly in elevation,illustrating in detail certain features of my invention as hereinembodied, and

Fig. 3 is a fragmentary view in elevation of the inner edge of the shankas herein disclosed. 7

As disclosed in the accompanying drawings S denotes an elongated shankof pre- Specification of Letters Patent.

determined dimensions and which j is providedat one end portion with afixed aw I Patented July 5,1921..- Application flled May 15,1926. Serialnohssnaeo'," 1

stantially throughout its enti e y-l straight and in continuity. v" Theinner pertion of the shank S, or that portion of m'aiiimum width, hasits inner edge straight with the surface of said edge serrated or other?wise roughened as at 2 which w111 hereina I after be more particularlyre'ferredito Mounted 'uponthe-ishank- .S is a movable or sliding capableof a slight rock-L inglmo vement iniadirection longitudinal of theshank-S. "Coactingrwith the jaw is lockinglor holding member M also.slid i ably mounted on" the shank S and also: capable of a slightlyrocking movement in a:

direction longitudinally of said shank. The locklng or-holding member Mhas one side portion extending beyond ;the"inner edge I of the ,shankjSand-said side'fportiorr has 4 its opposite 'longitudinalmargin definedby the outstanding flanges" 3' between I the -for wa'rd end portions 'ofwhich is pivotally supported for locking-movement a pawl or dog Thepivoted, portion of'the pawl or dog' 4 is provided with an extension of'tail' 5 overlying the, adjacent side of; the meat-p bei' M and movableupon depres'sion'between; the flanges 3. 'Interp'osed'betweenthe cute-1*end portion ofthee-Xten'sion'ontail and 190 spring 6 whichoperateeto'cbnstanuyurge the adj ac'ent'sid'el of the "mernber" M issaid extension -o1?-tarl 'm'emb'er 5 outwa'rdly and" cause the pa la'or:dog 45- to engage the inner edge orthe shank Sg' or "more ti ularly tfhautomatically operates to maintain the locking or holding member Msubstantially fixed in the desired adjustment. a

' The serrated or otherwise roughened edge portion 2 provides means toprevent grease or other substances from affecting the bite of the jaw Jupon the shank and also fa- I s rrated on-roughenedportion or said edgea-whereby tne Y dog-or an 4:

cilitates the requisite engagement of the pawl or dog 5 therewith. Theouter end portion of the adjacent or coacting side of the member M iscut away as at 6 between the flanges 3 to permit therequisite engagementof the dog or pawl 4 with the shank S. a

The inner end of the M adjacent the inner edgeof the shank S side of themember is provided with an angular extension 7 which interlocks with anangular extension 8 carried by the adjacent or inner end portion of thejaw J so that the member M and the jaw J are caused to move in unisonand in the same general direction along the shank S, 4 a i The outerside of the jaw J at its inner end is inclined or beveled as at 9 in adirection inwardly of said jaw and outwardly with respect to the shanks.The adjacent side of the member M is provided with an extension 10havingits innerface inclined V or beveled and overlying the inclined orbeveled edge or face 9 and which arrangement or assemblageis maintainedby the interlocking or interfitting extensions 7 and 8 hereinbeforereferred to.

When the jawJ has been properly ad-T be self evident, that the greaterthe strain imposed upon the jaw J the tighter the member M will grip theshank S The contact of the dog or pawl l with the inner edgeof the shankS serves to hold the jaw J and the member M from slipping or movinglongitudinally of the shank S and particularly between workingoperations. As is clearly disclosed in the accompanying drawings thetail orextension 5 I of the dog or pawl 4 is disposed in the directiontoward the jaw J so that'said extension or tail 5 may be readily andconveniently depressed to free or release the dog or pawl 4 with respectto the shank S by pressure of the thumb or other digit of the hand,grasping the shank S.v 1

From the foregoing description it is thought to be obviousthat a wrenchconstructed in accordance with my invention is particularly well adaptedfor use by reason for the convenience and facilitywith which it may beassembled and operated, and it will also be obvious that my invention issusceptible of some change and modification without departing from theprinciples and spirit thereof, and for this reason I do not wish to beunderstood as limiting myself to the precise arrangement andformation ofthe several parts herein shown in carrying out my invention in practiceexcept as hereinafter claimed.

I claim: 7 -4 1. A wrench comprising a shank, a slidable jaw movablethereon, a holding' member slidably mounted directly on the shank andcoacting with the slidable jaw, said j and member having inclined facesco'acting one with the other when pressure is im} posed upon'the slidingjaw whereby the holding member holds said jaw against -movement alongthe shank, and automati-, cally operating means carried lay the hold ingmember for maintaining the same against movement along the shank betweenworking operations and means connecting said holding member and slidableaW whereby said member and slidable in unison upon the shank.

2. A wrench comprising a shank,'a slidable jaw movable thereon, aholding mem:

ber slidably mounted directly'on the shank and coacting with the movablejaw, theopposite faces of the jaw and the holding member having coactinginclined portions, means connecting said jaw and member whereby said jawand member shift simul taneously upon the shank, said jawhaving rockingmovement independently of the shank, the inner edge of the shank beingroughened to facilitate the requisite biting of the jaw on the shankwhen strain is imposed upon the jaw and means normally lockingv theholding member in adjusted position. 1 l

In testimony whereof I hereuntoafiix my signature.

mark

Witness GERTRUDE H. MY.

jaw move

